kinsing | f55e2afdc77587828c16f75a125b70a7ac1195bb9528628adb96ad41e2e96d46

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 17:22

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General

Target

2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe
Size

36KB
MD5

027b2679e2f47e088bee37670e2a15e4
SHA1

506032cd8fa9e6edc25fcfd2927d7df3218b83a8
SHA256

f55e2afdc77587828c16f75a125b70a7ac1195bb9528628adb96ad41e2e96d46
SHA512

41c73ef229a5bc03607dce2623306edbdb01d9ff51d5c3e063b137602519819eb792b13631685f902d40355c6787c2cf44f9f117b8a52e81e74c40a44f7e970e
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLz:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLz

Score

10^/10

kinsing loader

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing

Detection of CryptoLocker Variants 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/404-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320b-13.dat	CryptoLocker_rule2
behavioral2/memory/404-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/404-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320b-13.dat	CryptoLocker_set1
behavioral2/memory/404-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid	Process
3456	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe

description	pid	Process	procid_target
PID 404 wrote to memory of 3456	404	2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe	88
PID 404 wrote to memory of 3456	404	2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe	88
PID 404 wrote to memory of 3456	404	2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_027b2679e2f47e088bee37670e2a15e4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:404
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
37KB

MD5
d97642d1d70f50663b1a674f0f770934

SHA1
bd327f9b341698da1c8bfc61026e3b9ecd7757f6

SHA256
3844afe75f39db114286431872ad057ae3b1ae86cda44ccffd707b8713b74d38

SHA512
6e765c950a7990c5f0eeb0b3261dc64ba558f5314db71fe82a1aecb93b58074c65991200c238186a0cf6c96143c773282e4753b591605aa8ed9b4e310e17c095

Download Submit
memory/404-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/404-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/404-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/404-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/404-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3456-19-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/3456-21-0x0000000001F10000-0x0000000001F16000-memory.dmp

Filesize
24KB

Download